Thread: Radiator plug again!!

So today I happen to catch antifreeze dripping from under the car. Its in the same spot as the drain hole. I've changed that plug a few months back with a Dorman plug from autozone and it hasn't leaked until now. Could it be that the aftermarket parts are prone to cracking with heat or its just an inferior product to an oem ? Should I just order a AC Delco an call it a day? Thanks.